Scientists have discovered the bones of ancient salamanders that they say would have been the size of cars.

Researchers from the University of Edinburgh excavated the bones in southern Portugal, where they have already found remains from at least 10 individual bodies, the BBC reports. Though related to the modern salamander, the animal would have behaved more like a crocodile or alligator when it likely feasted on early dinosaurs and mammals some 220 million years ago.

Scientists continue to dig up the flat-headed, toothy amphibians and expect to uncover hundreds more bodies on the site.